Waitopedia is a comprehensive resource of information about SQL Server waits.

The description shown below is the top answer as voted by the Spotlight community.

The charts are based on 2.1 TB of data collected from 4207 instances uploaded by 323 Spotlight users over an 8 week period.

SLEEP_SYSTEMTASK

Category: Idle
SQL Server versions: 2005, 2008, 2008 R2, 2012, 2014, 2016, 2017

This is an idle wait and so it can be safely ignored.

What is SLEEP_SYSTEMTASK?

1 Answer

 

Occurs during the start of a background task while waiting for tempdb to complete startup. Information from Microsoft®

Very rare

This wait never occurs for most instances

For each of 4207 instances, we ranked SLEEP_SYSTEMTASK on how frequent it is compared to all other recent waits. The chart shows the total of all rankings.

Prevalence of SLEEP_SYSTEMTASK across the Spotlight Population

For 31 % of hours with this wait, average wait time is around 15 ms

For each instance, we found all the recent hours when it had a SLEEP_SYSTEMTASK wait. We found the average latency for each of those hours.

74 instances contributed data to this chart

Latency Distribution of SLEEP_SYSTEMTASK across the Spotlight Population